a narrow tipped rubber bulb syringe at a drug store. It will look
something like this:
a few drinking straws- the thicker walled, the better.
a potato (carefully!) into 1/4 inch thick disks.
one end of the straw into the potato disk. When you remove the straw,
the potato plug should remain in the straw end.
the nose of the syringe into the end of the straw, pushing the plug
farther into the straw. Make sure it makes an airtight seal.
squeeze the syringe bulb, and the potato plug will shoot out at high
A few variations
- If you
gently hold the straw on top of the potato plug, so the plug is somewhat
restrained when squeezing the bulb, it will travel a much greater
inserting the syringe in the opposite end of the straw.
different kinds of potatoes, apples, beets, etc.
six or seven straws together into a "gattling gun" arrangement,
so you don't have to reload as frequently.
guns have been used to shoot
frozen chickens over 450 m.p.h. to test aircraft canopies?